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1; RUN: llc -stop-after=early-tailduplication < %s | FileCheck %s2;3; Check that DebugLoc attached to the branch instruction of4; 'while.cond1.preheader.lr.ph' survives after tailduplication pass.5;6; CHECK: [[DLOC:![0-9]+]] = !DILocation(line: 9, column: 5, scope: !{{[0-9]+}})7; CHECK: [[VREG:%[^ ]+]]:gr64 = COPY $rdi8; CHECK: TEST64rr [[VREG]], [[VREG]]9; CHECK-NEXT: JCC_1 {{.+}}, debug-location [[DLOC]]10; CHECK-NEXT: JMP_1 {{.+}}, debug-location [[DLOC]]11 12target triple = "x86_64-unknown-linux-gnu"13 14%struct.Node = type { ptr }15 16define i32 @foo(ptr readonly %node, ptr readnone %root) !dbg !6 {17entry:18 %cmp = icmp eq ptr %node, %root, !dbg !819 br i1 %cmp, label %while.end4, label %while.cond1.preheader.lr.ph, !dbg !1020 21while.cond1.preheader.lr.ph: ; preds = %entry22 %tobool = icmp eq ptr %node, null23 br i1 %tobool, label %while.cond1.preheader.us.preheader, label %while.body2.preheader, !dbg !1124 25while.body2.preheader: ; preds = %while.cond1.preheader.lr.ph26 br label %while.body2, !dbg !1127 28while.cond1.preheader.us.preheader: ; preds = %while.cond1.preheader.lr.ph29 br label %while.cond1.preheader.us, !dbg !1030 31while.cond1.preheader.us: ; preds = %while.cond1.preheader.us.preheader, %while.cond1.preheader.us32 br label %while.cond1.preheader.us, !dbg !1033 34while.body2: ; preds = %while.body2.preheader, %while.body235 br label %while.body2, !dbg !1136 37while.end4: ; preds = %entry38 ret i32 0, !dbg !1239}40 41!llvm.dbg.cu = !{!0}42!llvm.module.flags = !{!3, !4}43 44!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, emissionKind: LineTablesOnly)45!1 = !DIFile(filename: "foo.c", directory: "b/")46!2 = !{}47!3 = !{i32 2, !"Dwarf Version", i32 4}48!4 = !{i32 2, !"Debug Info Version", i32 3}49!5 = !{}50!6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 5, type: !7, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)51!7 = !DISubroutineType(types: !2)52!8 = !DILocation(line: 7, column: 15, scope: !9)53!9 = !DILexicalBlockFile(scope: !6, file: !1, discriminator: 2)54!10 = !DILocation(line: 7, column: 3, scope: !9)55!11 = !DILocation(line: 9, column: 5, scope: !9)56!12 = !DILocation(line: 14, column: 3, scope: !6)57